Elecnova Sfere720A lcd electric 3phase multifunction power meter digital
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Jiangsu Sfere Electric Co., Ltd.
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1.Product introduction
SFERE720A/B multi-function power meters can measure voltage, current, frequency, power, power factor, energy, harmonics and demand, record SOE events, and realize off-limit alarm. They also have the functions such as communication, digital input, relay output and energy pulse output. As an advanced smart digital front-end acquisition components for grid, they are widely applied in many kinds of control systems, energy management systems, substation automation systems, power distribution automation systems, smart distributors and switch cabinets. This series of products provide many wiring methods and convenient operation methods which can meet different requirements at field.
2.Product display
3.Technical specification
Working environment |
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Working temperature |
-10°C to 55°C |
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Storage temperature |
-25°C to 70°C |
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Relative humidity |
≤95% RH, no condensation |
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Working altitude |
≤2500m |
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Protection degree |
Front case IP64, rear case IP20. |
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Insulation |
Between signal, power supply, output terminal to case resistance >100MΩ |
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Working power supply |
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Rated range |
AC/DC(20~300)V |
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Power consumption |
≤5VA |
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Withstand voltage |
≥2kV |
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Voltage input |
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Rated range |
230V/400V(continuous: 1.2Un) |
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Resolution |
0.1 V |
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Impedance |
1.6 MΩ/per phase |
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Power consumption |
≤0.1 VA /per phase |
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Over voltage |
Instantaneous:2 times/10s |
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Frequency |
45-65 Hz |
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Current input |
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Range |
5A/1A, (continuous: 1.2In) |
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Resolution |
1 mA |
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Impedance |
≤20mΩ/per phase |
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Power consumption |
≤0.2 VA/per phase |
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Over current |
Instantaneous:10 times/5s |
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Relay output |
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Capacity |
5A/250 VAC; 5A/30 VDC |
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Isolation voltage |
Between contact and coil: 2000 VAC / min |
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Action time |
10 ms max |
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Release time |
5 ms max |
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Mechanical service life |
106 times |
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Energy pulse output |
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Pulse width |
80ms±20% |
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Max. terminal voltage |
35V |
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Max. terminal current |
10mA |
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Pulse frequency |
≤10Hz |
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Digital input |
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Sensitivity |
ON:140~270V AC, OFF: <110 V AC |
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Isolation voltage |
5000 VAC (1 min) |
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Scanning time |
1 ms |
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Wave filtering time |
30 ms |
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Communication interface |
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Physical interface |
RS-485 |
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Communication speed |
Up to 115.2 kbps |
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Communication protocol |
Modbus-RTU |
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Isolation voltage |
2000 VAC (1 min) |
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Real-time clock |
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Error |
≤0.5s/day |
4.Function
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